Why do you keep insisting ALL the earth's need to be merged?I've been thinking it over... I've said before that I doubt they'll merge the Earths, because it would gain them nothing (they can already cross between shows casually with the extrapolators, and they rarely cross shows over at all except during the December events anymore) and cost them a great deal (the worldbuilding and history of the alien-rich Earth-38 as distinct from Earth-1's history, as well as the diversity of the other parallel Earths and their various doppelgangers, not to mention how completely Tom Cavanaugh's role on the series has come to be defined by parallel realities). But it occurred to me that it might be possible to merge Earths 1 & 38 in a way that gained them something -- if it meant that E-38's aliens became part of E-1's society, and that the people had enough awareness of the change that the combined world's society had to adjust to the alien presence. That could drive some new storytelling on Supergirl and The Flash, though it's hard to see it working on Batwoman and it'd largely be a distraction from Legends' craziness. So there is something, potentially, that could be gained.
I still don't think they'll actually do it; there are too many reasons not to eliminate the distinct worlds, particularly in midseason with ongoing story arcs still in play. I'm merely revising my earlier assertion that merging the worlds would gain them nothing. It could potentially gain them at least one thing, but I still don't think it outweighs the reasons not to do it.
And the whole Wells thing has been played out. They missed their chance to have a sorrowful, sympathetic and broken Wells this season